JPH0346770B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an electronic temperature measuring device.

Recently, electronic wristwatches have become more multifunctional, and electronic wristwatches equipped with temperature measuring devices are being considered. This type of electronic wristwatch converts the temperature detected by a temperature sensor into a digital value and displays it.
Since the temperature sensor consumes a large amount of power, it is not suitable for a small electronic timepiece such as a wristwatch to operate the temperature sensor all the time.

This invention was made in view of the above-mentioned circumstances, and its purpose is to use an electronic temperature measurement system that can reduce power consumption as well as provide accurate temperature information at the time of use. The goal is to provide equipment.

Hereinafter, one embodiment of the present invention will be specifically described with reference to the drawings. This embodiment shows a case where the present invention is applied to an electronic wristwatch equipped with a temperature measuring device. In FIG. 1, reference numeral 1 indicates a display device provided on the front side of the electronic wristwatch. At the bottom of this display device 1, there is a first numerical display 2 that digitally displays time information and temperature setting temperature of a temperature alarm. In addition, in the middle part, there is a character display 3 that displays day of the week information and display mode information in alpha alphabet letters, and a second character display that digitally displays date information and measured temperature information.
Numerical display bodies 4 are disposed, respectively, and furthermore, an analog display body 5 for displaying measured temperature information in analog form is disposed in the upper part. This analog display body 5
consists of two triangular display elements on the left and right and 40 display elements arranged in a straight line, and above the 40 display elements there are temperature display scales corresponding to every 5 display elements.
0, 5, ... 35, 40 are fixedly displayed, the left triangular display element above displays temperatures below 0°C, the right triangular display element displays temperatures above 41°C, and 40 display elements It displays the temperature from 1°C to 40°C in units of 1°C. Furthermore, a temperature sensor 6 is provided on the front of this wristwatch.

The mounting structure of the temperature sensor 6 is as shown in FIGS. 2 to 4. That is, the substantially cylindrical sensor holding member 7 is made of ceramic and synthetic resin, and has an opening that serves as the sensor housing hole 8 . A temperature sensor 6 is housed in a substantially central portion of the housing hole 8 .
The temperature sensor 6 is held by a filler 9 formed by filling glass powder into the storage hole 8 and melting and solidifying the glass powder. The temperature sensor 6 has a thermistor element 6a housed and protected within a spherical glass body 6b, and a pair of lead wires 6c of the thermistor element 6a are drawn out from the glass body 6b. The lead wire 6c is led out from a pair of small holes 8a formed at the lower end of the storage hole 8 to the lower surface of the holding member 7. A pattern electrode 10 is formed on the lower surface of the holding member 7, and a lead wire 6c is fixed to the pattern electrode 10 with a conductive adhesive 11. The holding member 7 holding the temperature sensor 6 in this manner is inserted into a through hole 14 formed in the watch case 13 via a packing 12. A pair of conductive coil springs 15 are interposed between the holding member 7 and the circuit board 14 to electrically connect the pattern electrode 10 and the circuit board 14.

Next, the circuit configuration of this electronic wristwatch will be explained with reference to FIGS. 5 to 7. The reference clock signal outputted from the oscillation circuit 17 constituting the clock circuit 16 is frequency-divided into a 1-second signal (1 Hz example) by the frequency dividing circuit 18, and sent to the counter circuit 19, where it is counted. . This counter counting circuit 19 receives time information of hours, minutes, and seconds, day information of the week, based on the one second signal.
Date information of the month and day is counted and outputted and sent to the display device 1 via the display switching control section 20.

Further, the switch section 21 includes manual switches S ₁ to _{S 4} provided outside the watch case, and a manual switch S ₅ provided inside the watch case. Switch _S1 is a switch for measuring and canceling the temperature at that time when operated, switch _S2 is a mode changeover switch for switching between temperature alarm setting mode, temperature measurement mode, and time mode, switch _S3 , _S4 is used to set a desired alarm temperature in temperature alarm setting mode, switch _S3 is a switch that increases the alarm temperature by +1℃ each time it is operated, and switch _S4 is a switch that increases the alarm temperature by +1℃ each time it is operated. A switch that decreases the alarm temperature by -1℃ each time it is operated, and a switch _S5 that specifies what material the watch case is made of, such as metal case, plastic case, or insert. This is a switch that specifies one of the cases. The outputs of these switches S ₁ to S ₄ and S ₅ are respectively provided to the switch control section 22 .

The switch control unit 22 outputs various control signals according to the output of the switch unit 21, and outputs display switching commands to the display switching control unit 20 and signals a to g to the temperature measuring device 23. . signal b
is provided with an OR gate 24 to which a 1P (pulse)/1M (minute) signal output from the counting circuit 16 is input. The output of this OR gate 24 is a temperature sensor 6, an A/D (analog/digital) conversion circuit 25 that converts the temperature detected by this temperature sensor 6 into a digital value, and a temperature converted by this A/D conversion circuit 25. are respectively given to a temperature correction circuit 26 that corrects based on the influence of the human body,
These are operation commands for operating each circuit. Also,
Signal a is a signal that specifies the material of the watch case.
It is applied to the temperature correction circuit 26. Note that since thermal conductivity differs depending on the material of the watch case, the influence of body temperature on the temperature sensor 6 differs depending on the material of the watch case. Therefore, the temperature correction circuit 2
6 corrects the temperature converted by the A/D conversion circuit 25 according to the material of the watch case. Further, the signals c to g are given to the temperature storage circuit 27, and the signals c to f are signals for setting an alarm temperature in the temperature storage circuit 27. Note that the temperature storage circuit 27 is configured to be able to set two types of alarm temperatures. Further, the signal g is a signal for selectively outputting two types of alarm temperatures set in the temperature storage circuit 27 to the display switching control section 20.

The alarm temperature set in the temperature storage circuit 27 is sent out in accordance with the output of the OR gate 24, and given to each temperature comparison circuit 28 into which the corrected temperature is input from the temperature correction circuit 26. This temperature comparison circuit 28 compares the magnitude of both input temperature data and detects whether or not the corrected temperature has reached the alarm temperature. When the corrected temperature reaches the alarm temperature, it outputs an alarm signal. The alarm device 29 generates an alarm sound.

The temperature converted by the A/D conversion circuit 25 is read into the latch 30, and the temperature corrected by the temperature correction circuit 26 is read into the latch 31.
Each is sent to the display switching control section 20.

Next, the switch control section 22 and the display switching control section 20 will be explained in detail with reference to FIG. The switch control section 22 is provided with one-shot circuits 32-36, respectively, which output pulse signals when the operation signals of the corresponding switches _S1 - _S5 are applied. The pulse signal output from the one-shot circuit 32 is applied to the T input terminal of the trigger flip-flop 37 to invert its output. The Q and output of this flip-flop 37 are provided to a decoder 38, respectively. Further, the pulse signal output from the one-shot circuit 33 is applied to the ternary counter 39, and increments its contents by +1. The ternary counter 39 is a one-shot circuit 33.
Depending on the output of
"0"... and its contents "0", "1",
"2" corresponds to the clock mode, temperature measurement mode, and temperature alarm setting mode, respectively, and each bit output is given to the decoder 38, respectively. Furthermore, the pulse signals outputted from the one shot circuits 34 and 35 are given to a decoder 38, and the signal a outputted from the one shot circuit 36 is sent out from the switch control section 22.

The decoder 38 is composed of a decoder section 38-1 having an AND gate function, and decoder sections 38-2 and 38-3 having an OR gate function.
The decoded output is sent from 13. The decoded output from line l1 is given to the one-shot circuit 40, which outputs the pulse signal b.
output. The decoded outputs from lines 12 to 18 are display switching commands output to the display switching control section 22. The decoded outputs from lines 19-113 are signals c-g that are output to the temperature measuring device 23.

The display switching control section 22 includes gate circuits 41 to 43 to which date information, day of the week information, and time information are inputted correspondingly from the counting circuit 19, and a gate circuit 44 to which the set temperature is inputted from the temperature storage circuit 27. It has gate circuits 45 and 46 to which the corrected temperature is input from the temperature correction circuit 26, and gate circuits 47 and 48 to which the temperature converted by the A/D conversion circuit 25 (uncorrected temperature) is input. Gate circuits 41 to 46 are controlled to open and close according to display switching commands input from lines l2 to l7, and gate circuits 47 and 48 are controlled to open and close according to display switching commands input from line l8. It is becoming more and more common. And gate circuit 41,
The output contents of 46 and 47 are sent to the second numerical display 4 and are switched and displayed. The output contents of the gate circuit 42 are sent to the character display 3 and displayed. This character display body 3 is given the outputs of lines l5 and l8, and when the character display body 3 is given the output of line l5, the content displayed on the second numerical display body 4 is changed to the A/D conversion circuit 25. Displays mode information (TE-) that clearly indicates the temperature converted by Mode information (TA-) clearly indicating that the temperature is the set temperature of the memory circuit 27 is displayed. Further, the output of line 15 is given to the first numerical display 2. In this case, the first numerical display 2 indicates Celsius in its lower digits (℃)
is now displayed. Further, the output contents of the gate circuits 43 and 44 are sent to the first numerical display 2 for switching display, and the output contents of the gate circuits 45 and
The output contents of 48 are sent to the analog display 5 for switching display.

Next, the temperature correction circuit 26, temperature storage circuit 27, and temperature comparison circuit 28 will be explained in detail with reference to FIG. The temperature correction circuit 26 is the A/D conversion circuit 25
The temperature converted in is input to the arithmetic circuit 50 via the latch 49. This arithmetic circuit 50 is adapted to correct the temperature converted by the A/D conversion circuit 25 based on the following equation when the output of the OR gate 24 is given.

Ta=an・T+bn Ta: outside temperature, T: temperature detected by sensor 6 when the watch is carried, an: temperature coefficient, bn: initial value In other words, the relationship between the temperature detected by temperature sensor 6 (sensor temperature) and the outside temperature is , as shown in FIG. Here, when the watch is not carried, that is, when it is taken off the wrist, the sensor temperature changes equivalently in proportion to the outside temperature, as shown in A in Figure 5, and when the watch is carried, the sensor temperature changes equivalently in proportion to the outside temperature. When the watch case is made of metal, the sensor temperature increases from the initial value of 22.5°C at an outside temperature of 0°C as the outside temperature rises, as shown in B in Figure 8. In case c of Figure 8
As shown in the figure, the sensor temperature starts to rise from an initial value of 25° C. when the outside air temperature is 0° C. as the outside air temperature rises. In this way, the temperature coefficient an and the initial value bn differ depending on the material of the watch case.
Note that A, B, and C in Figure 8 are the outside air temperature of 34.5℃.
are in agreement. As a result, in this embodiment, in order to be compatible with three types of watch cases, a storage unit 51 that stores temperature coefficients a ₁ to a ₃ for metal cases, plastic cases, and insert cases;
a storage unit 52 that stores initial values b ₁ to b ₃ ; gate circuits 53 to 55 to which temperature coefficients a ₁ to a ₃ and initial values b ₁ to b ₃ output from each storage unit 51 and 52 are input; 5
6 to 58, and a ternary counter 59 for selectively opening and closing these gates 53 to 58. In this case, the contents of the ternary counter 59 are incremented by +1 by the signal a, and the contents are "0", "1", "2",
Among the bit outputs "0", "1", and "2", the signal "2" opens the gate circuits 53 and 56 to increase the temperature coefficient a ₁ and the initial value. value
b ₁ is supplied to the arithmetic circuit 50, and the signal “1”
opens the gate circuits 54 and 57 to obtain the temperature coefficient a ₂ ,
In addition, the initial value b ₂ and the signal “0” are set to the gate circuit 5.
5 and 58 and supply the temperature coefficient a ₃ and initial value b ₃ to the arithmetic circuit 50, respectively. Arithmetic circuit 5
The operation result data of 0 is supplied to the latch 31 and the temperature comparator circuit 28, respectively.

The temperature memory circuit 27 includes a temperature setting counter 6.
0 and 61. This counter 60 is for setting the lower limit temperature of the alarm temperature, and its contents are +
+1 according to the signal d input to the 1 input terminal
At the same time, it is decreased by -1 in accordance with the signal c input to the -1 input terminal. Further, the counter 61 is for setting the upper limit temperature of the alarm temperature, and its contents are incremented by +1 in accordance with the signal f inputted to the +1 input terminal, and are increased by +1 in accordance with the signal e inputted to the -1 input terminal. It is designed to be decremented by -1. The outputs of these counters 60 and 61 are sent to the display switching control section 20 through corresponding gate circuits 62 and 63.
will be sent to. In this case, the signal g is applied to the gate circuit 62 via the inverter 64 and directly to the gate circuit 63 as a gate opening/closing signal, thereby selectively opening and closing the gate circuits 62 and 63. In addition, the outputs of the counters 60 and 61 are
Temperature comparison circuit 28 via gate circuits 65 and 66
supplied to In this case, the output of the OR gate 24 is given to the gate circuits 65 and 66 as a gate opening/closing signal, thereby opening and closing the gate circuits 65 and 66 simultaneously.

The temperature comparison circuit 28 includes a temperature setting counter 6.
It has comparison circuits 67 and 68 corresponding to 0 and 61. The set temperature is input from the counter 60 to the B input terminal of the comparison circuit 67, and the corrected temperature is input from the arithmetic circuit 50 to the A input terminal. Then, the comparison circuit 67 compares the magnitude of both input temperature information, and as a result, when A>B, that is, the corrected temperature becomes higher than the set temperature, an alarm signal is sent out via the OR gate 60. It is configured as follows. In addition, the comparison circuit 68
The set temperature is inputted from the counter 61 to the C input terminal of , and the corrected temperature is inputted from the arithmetic circuit 50 to the A input terminal. Then, the comparison circuit 68 compares the magnitude of both input temperature information, and as a result, when C>A, that is, the corrected temperature becomes smaller than the set temperature, an alarm signal is sent out via the OR gate 69. It is composed of

Next, the operation of the electronic wristwatch configured as described above will be explained. First, for example, when the assembly of the watch module is completed, the switch _S5 is operated depending on the material of the watch case. In other words, when switch _S5 is operated, one shot circuit 3
6, a pulse signal a is output every time the switch _S5 is operated, and is input to the ternary counter 59 of the temperature correction circuit 26. Therefore, the ternary counter 59 is incremented each time the switch _S5 is operated. In this case, if the watch case is a metal case, the contents of the ternary counter 59 are set to "0", if it is a plastic case, it is set to "1", and if it is an insert case, it is set to "2". In this way, when the contents of the ternary counter 59 are set according to the material of the watch case, the corresponding gate circuits 53 to 58 are opened by each bit output of the ternary counter 59. Temperature coefficients a ₁ to a ₃ and initial values b ₁ to b ₃ corresponding to the material of the watch case are input to the calculation circuit 50 . As a result, the arithmetic circuit 5
0 makes it possible to execute a predetermined calculation based on the temperature coefficients inputted from among the temperature coefficients a ₁ to a ₃ and the initial values b ₁ to _{b 3} and the initial values.

Next, the display states of FIGS. 9A to 9E will be sequentially explained. First, the ternary counter 3 of the switch control section 22
9 is set to "0", that is, the time mode is set, and the flip-flop 37 is
When the output of the decoder 3 is a logical value “1”, the decoder 3
8 lines l2, l3, l4, and l6 are output with logic value "1" signals, which open the gate circuits 41, 42, 43, and 45 of the display switching control section 20, respectively. As a result, the date information output from the gate circuit 41 is sent to the second numerical display 4, the day of the week information output from the gate circuit 42 is sent to the character display 3, and the gate circuit The time information output from the gate circuit 33 is sent to the first numerical display 2, and the corrected temperature information output from the gate circuit 45 is sent to the analog display section 5 and displayed. As a result, the display contents of the display device 1 become as shown in FIG. 9A. In this case, the temperature displayed on the analog display section 5 is changed every minute.
That is, the output from the counting circuit 19 is
Temperature sensor 6, A/
The D conversion circuit 25 and the temperature correction circuit 26 each operate at one-minute intervals, and the temperature detected by the temperature sensor 6 becomes A/
After being converted into a digital value by the D conversion circuit 25,
The temperature correction circuit 26 performs correction according to the correction formula of Ta=an·T+bn, and this corrected temperature is sent to the analog display section 5 via the latch 31 and the display switching control section 20. Therefore, the temperature automatically measured every minute is corrected and displayed on the analog display section 5.

Next, in the watch mode, when switch _S1 is operated once, the output state of the flip-flop 37 is inverted by the pulse signal output from the one-shot circuit 32, and its Q output becomes a logic value "1", and the decoder 38 outputs a logic value "1". Lines l1, l3, l4, l
A signal with a logical value of "1" is output from 6 and 17.
As a result, the temperature sensor 6, A/D conversion circuit 25, and temperature correction circuit 26 are operated by the pulse signal b output from the one-shot circuit 40, so when the switch _S1 is operated, the temperature at that point is be measured. In other words, if switch S ₁ is operated while temperature measurement is performed automatically every minute, the temperature at that point is measured, and manual temperature measurement is possible in contrast to automatic temperature measurement. Become. Thus, the lines l3, l4, l6, l of the decoder 38
When a signal of logical value "1" is output from 7, the gate circuits 42, 43, 45, 46 of the display switching control section
will be opened. As a result, the temperature measured at the time of operation of the switch _S1 is corrected by the temperature correction circuit 26, and this corrected temperature is displayed on the second numerical display 4.
As shown in Figure B, the date information and date information are displayed. In this state, when the switch _S1 is operated one more time, the output state of the flip-flop 37 is inverted and its Q output becomes the logical value "1", so the 9th
The display returns to the display state shown in Figure A.

Next, in the state shown in Figure 9A, switch S2 is turned to ₁ .
When operated once, the content of the ternary counter 39 is incremented to "1" by the pulse signal output from the one-shot circuit 33, and the temperature measurement mode is set. In this measurement mode, the decoder 38
A signal with a logical value of "1" is output from lines l4 and l8, and the gate circuit 43 of the display switching control section 20,
47 and 48 are opened, and the output signal of line l8 is applied to character display body 3. As a result,
As shown in FIG. 9C, in addition to the time information being displayed on the first numerical display 2, the uncorrected temperature output from the gate circuit 47 is displayed on the second numerical display 4, and the gate circuit The uncorrected temperature output from 48 is displayed on the analog display section 5, and further,
"TE-" is displayed on the character display 3, clearly indicating that the display content on the second numerical display 4 is the uncorrected temperature.

In this measurement mode, when switch _S2 is further operated once, the ternary counter 39 is incremented to "3" by the pulse signal output from the one-shot circuit 33, and enters the temperature alarm setting mode, and the decoder 38 lines l5, l6, l7
A signal with a logical value of "1" is output from the gate 1, and the gate circuits 44, 45, and 46 of the display switching control section 20 are opened. As a result, the measured temperature output from the gate circuit 44 is displayed on the first numerical display 2. In this case, the signal g output from the decoder 38 is
Since the logical value is "0", the temperature storage circuit 27 receives the signal g inverted by the inverter 64.
Then, the gate circuit 62 is opened, and the contents of the temperature setting counter 60 are sent out via the gate circuit 62. Therefore, the set temperature displayed on the first numerical display 2 is the lower limit of the alarm temperature. Initially, the content of the temperature storage circuit 27 is "0", so the displayed set temperature is "0". Therefore, when setting a desired alarm temperature, for example, -5°C, in this temperature storage circuit 60,
Operate Switch S ₄ 5 times. As a result, the pulse signal outputted from the one-shot circuit 35 is outputted as a signal c from the line l9 of the decoder 38, and the temperature setting counter 60 of the temperature storage circuit 27 is outputted as a signal c.
It is input to the -1 input terminal of. Therefore, a value corresponding to the number of times the switch S ₄ is operated is set in the counter 60, and this value is displayed on the first numerical display 2. In this case, in the temperature alarm setting mode, the output signal on line l5 of the decoder 38 is
As shown in FIG. 9D, "℃" is displayed in the lower digit of the first numerical display 2 and the character display 3
"TA-" is displayed, and the first numerical display 2
clearly indicates that the displayed content is the alarm setting temperature. As shown in FIG. 9D, "L" is written in the upper digit of the first numerical display 2 by appropriate means.
By displaying , it is possible to clearly indicate that the temperature displayed on the first numerical display 2 is the lower limit temperature of the alarm temperature. In the temperature alarm setting mode, the corrected temperatures output from the gate circuits 45 and 46 are as shown in FIG. 9D.
It is displayed digitally on the second numerical display 4 and in analog form on the analog display 5.

Next, when setting the upper limit of the alarm temperature in the temperature alarm setting mode, first,
Operate switch S ₁ once to flip-flop 37
inverts the output state of
Then, the lines l5, l6, l of the decoder 38
7, l13 outputs a signal with a logical value of "1". Therefore, the gate circuits 44, 45, and 46 are opened, and the signal g outputted from the line l13 is input to the temperature storage circuit 27, thereby opening the gate circuit 64 and opening the gate circuit 63. In this state, to set the upper limit temperature of the alarm temperature to, for example, 25°C, operate switch _S3 25 times. As a result, the pulse signal outputted from the one shot circuit 34 is outputted as a signal f from the line l12 of the decoder 38, and the temperature setting counter 61 of the temperature storage circuit 27 is outputted as a signal f.
It is input to the +1 input terminal of. Therefore, a value corresponding to the number of times the switch _S3 is operated is set in the counter 61, and the value set in the counter 61 is displayed on the first numerical display 2 as shown in FIG. 6E. As shown in FIG. 9E, if "H" is displayed in the upper digit of the first numerical display 2 by appropriate means, the temperature displayed on the first numerical display 2 can be changed. It is possible to clearly indicate that the temperature is the upper limit temperature of the alarm temperature.

In this state, when the switch _S1 is operated one more time, the output state of the flip-flop 37 is inverted and its output Q becomes a logical value "1", so that the display state shown in FIG. 9D is returned to.

In addition, in the state shown in FIG. 9D, the switch
If _S2 is operated one more time, the contents of the ternary counter 39 become "0", so the state returns to the state shown in FIG. 9A.

Therefore, the counters 60, 6 of the temperature storage circuit 27
The alarm temperature set to 1 is
Each time an output is given, the corresponding gate circuit 6
5 and 66 to comparison circuits 67 and 68. The comparison circuits 67 and 68 perform a comparison operation with the corrected temperature input from the arithmetic circuit 50 every time the output of the OR gate 24 is applied. Therefore, when the corrected temperature reaches the lower limit temperature of the alarm temperature, for example, -5°C, the comparator circuit 67
An alarm signal is output from the comparator circuit 68, and when the upper limit temperature of the alarm temperature reaches, for example, 25°C, an alarm signal is output from the comparator circuit 68.
An alarm sound is generated from the sound reporting device 29.

In the above embodiment, the automatic temperature detection operation is performed every minute, but the interval can be set freely.

In addition, although the above embodiment shows the case where it is incorporated into an electronic wristwatch, if it is a portable electronic device,
It is not limited to electronic watches.

Furthermore, in the above embodiment, the outside air temperature is measured, but the water temperature may also be measured.

As explained in detail above, according to the electronic temperature measuring device of the present invention, temperature measurement is not carried out all the time, but is carried out at regular intervals, so that it is possible to significantly reduce power consumption, and also to automatically measure temperature. Because it is a precise measurement, it is extremely easy to handle.Furthermore, you can measure the temperature as needed, so you can know the exact temperature when you operate the temperature measurement switch, and if the temperature changes suddenly, you can , is particularly effective.

[Brief explanation of drawings]

The drawings show an example in which the present invention is applied to an electronic wristwatch, with FIG. 1 showing the front part of the electronic wristwatch, and FIGS. 2 to 4 showing the structure of the temperature sensor mounting part. , Fig. 2 shows the temperature sensor housed in the holding member, Fig. 3 is a bottom view of Fig. 2, and Fig. 4 shows the holding member shown in Fig. 2 incorporated into the watch case. 5 is a diagram showing the circuit configuration of the electronic wristwatch, and FIG. 6 is a diagram showing the switch control section, display switching control section, and display switching control section shown in FIG. 5.
FIG. 7 is a diagram showing details of the display device, FIG. 7 is a diagram showing details of the temperature correction circuit, temperature storage circuit, and temperature comparison circuit shown in FIG. 5, and FIG. 8 is a diagram showing the sensor temperature and outside temperature. Figures 9A to 9E showing the relationship are diagrams showing display states that change depending on the operation switch. 1...Display device, 6...Temperature sensor, 20...
Display switching control unit, 21...Switch unit, _S5 ...Switch, 22...Switch control unit, 23...Temperature measuring device.

Claims (1)

[Scope of Claims] 1. Temperature detection means for detecting temperature; first operation control means for operating the temperature detection means at predetermined time intervals; and control of the first operation by the temperature detection means. a storage means for storing temperature data detected at predetermined time intervals operated by the storage means; a temperature display means for displaying the temperature data stored in the storage means; an external operation switch; a second operation control means for operating the temperature detection means each time an operation switch is operated; and storing temperature data obtained when the temperature detection means is operated by the second operation control means in the storage means. An electronic temperature measuring device characterized by comprising: a memory control means;